Microsoft on Tuesday lost its appeal against a $290 million infringement verdict that threatens to remove Word and the Office suite from the market. The United States Court of Appeals has upheld a verdict that claims XML code in Word 2003 and 2007 violates patents developed by Toronto, Canada-based i4i for XML plugins. It also removes a temporary stay and would ban all sales of infringing copies of Word as of January 11th unless changes are made by Microsoft.